1. M.O. Hoenig, Design concepts for a mechanically refrigerated 13 K superconducting magnet system, IEEE Trans. Magn., Vol. MAG-19 (1983), p. 880.
2. GEC, Superconductive magnetic resonance magnet, European patent application, publication nr. 0 350 267 Al, date 10.01.90.
3. GEC, Coupling a cryogenic cooler to a body to be cooled, European patent application, publication nr. 0 350 266 A2, date 10.01.90.
4. M.T.G. van der Laan, R.B. Tax, H.H.J. ten Kate, L.J.M. van de Klundert, A mechanically driven switch for decoupling cryocoolers, in: “Advances in Cryogenic Eng.,” Vol. 35, p. 1457.
5. M.T.G. van der Laan, R.B. Tax, H.H.J. ten Kate, L.J.M. van de Klundert, The cryogenic system of a conduction cooled 12 K superconducting magnet. Presented at ICEC-13, Beijing, China, 1990.